QUOTE(alpha_prime @ Dec 19 2008, 02:47 PM)

isn't a D5 and a 240mm radiator kind of overkill for a 360? A 240mm radiator can handle about 400 watts of heat, that's enough for an enthusiast pc

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Maybe.... a little. On both of my 360's I use MCR320 Swiftech Radiators. I know that it's overkill becuase my liquid temps never leave 25*c to 26*c at 79*f to 80*f ambient temps.
When I did my buddy's 360 using my Nautilus Modded - one I see temps up towards 29*c at the same ambient. So in my honest opinion I feel that a dual rad is sufficient. Even the Koolance stock 360 bundle is a dual 120mm rad. (all be it aluminum though and only 1/4" id tubing.
Now as for a just a simple 220mm rad (dual 120mm) that would even suffice it for the 360, I just like that the GTX is more free flowing and thicker than Black Ice Pro standard radiators to offer better cooling performance.
My mod that I have going now is acutally a Koolance Exos 2.5 and I ripped out the alluminum Rad and have fitted it with a Thermochill PA220. I am almost done and will post pics when completed. I have swapped the fans out with 2ea Ultra Kazes +3000rpm fans and have a 1/2" shroud internal. I am wiring them to a fan controller. (too loud)
Water Cooling by any means is extreme, but for the original poster. If you invest in quality components then you can always move them to another 360 later or even start on your way to water cooling a PC.
I would ONLY ever use a Dual Rad for no more than just a CPU (or maybe add the northbridge/southbridge) but I would never load up a dual with CPU, and both SLI cards. Way too much heat vs noise ratio (fans) to cool them. Again in my opinion.
I hope this helps.
ALSO to the Original Poster - I forgot to tell ya the fans I would by to cool your Lian-Li case and Radiator Fans.
120mm Yate Loon D12SH-12 Case Fan - Black (88 CFM, 40 dBA)In my opinion the Best for Price and CFM per Noise Ratio
L8r
This post has been edited by SuDDeN: Dec 20 2008, 02:01 AM